Eiffel Tower solitaire is a modified version of Tower Solitaire where the cards are positioned in a shape that resembles the Eiffel Tower. Like in Tower Solitaire, the player is trying to build a single foundation up or down without regard to suit. The player can only move cards from the tower that are not partially covered by any other cards. The cards that the player is not allowed to move have been darkened so that the player can tell at a glance what cards he can move and what cards he can not.